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Searching for your parts in the DENSO part catalog is easy. Simply select the type of part you are looking for along with the year/make/model of your U.S. or Canadian vehicle. For vehicles in Latin America, please go here.

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    Search for cross reference part numbers for other manufacturers of the parts you're looking for.

    Cross Reference information is provided as a guide only. Please refer to the "Applications" lookup tabs for more detail. Materials and designs will differ among brands, so plugs are not exactly alike. Always check with your OE service manual for proper installation and settings.

    Iridium Power® Spark Plug Specifications

    NUMBER STOCK NO. THREAD DIAMETER (mm) THREAD REACH (mm) HEX SIZE (in) GAP (mm) INSULATOR PROJECTION (mm)
    IK16#4 5303 14 19 5/8 1.1 1.5
    IK20#4 5304 14 19 5/8 1.1 1.5
    IK22#4 5310 14 19 5/8 0.8 1.5
    IK22G#4 5348 14 19 5/8 0.8 1.5
    IK24#4 5311 14 19 5/8 0.8 1.5
    IK27#4 5312 14 19 5/8 0.8 0.5
    IK31#4 5321 14 19 5/8 0.8 -0.5
    IK34#4 5322 14 19 5/8 0.8 -0.5
    IKH16#4 5343 14 26.5 5/8 1.1 1.5
    IKH20#4 5344 14 26.5 5/8 1.1 1.5
    IKH22#4 5345 14 26.5 5/8 0.8 1.5
    IKH24#4 5346 14 26.5 5/8 0.8 1.5
    IKH27#4 5347 14 26.5 5/8 0.8 1.5
    IQ16#4 5301 14 19 5/8 1.1 1.5
    IQ20#4 5302 14 19 5/8 1.1 1.5
    IQ22#4 5313 14 19 5/8 0.8 1.5
    IQ24#4 5314 14 19 5/8 0.8 1.5
    IQ27#4 5315 14 19 5/8 0.8 0.5
    IQ31#4 5323 14 19 5/8 0.8 -0.5
    IQ34#4 5324 14 19 5/8 0.8 -0.5
    IT16#4 5325 14 .708” 5/8 1.1 1.5
    IT20#4 5326 14 .708” 5/8 1.1 1.5
    IT22#4 5327 14 .708” 5/8 1.1 1.5
    IT24#4 5328 14 .708” 5/8 0.8 -0.5
    IT27#4 5329 14 .708” 5/8 0.8 -0.5
    ITF16#4 5330 14 .460” 5/8 1.1 1.5
    ITF20#4 5331 14 .460” 5/8 1.1 1.5
    ITF22#4 5332 14 .460” 5/8 1.1 1.5
    ITF24#4 5333 14 .460” 5/8 0.8 -0.5
    ITF27#4 5334 14 .460” 5/8 0.8 -0.5
    ITL16#4 5349 14 25 5/8 1.1 1.5
    ITL20#4 5350 14 25 5/8 1.1 1.5
    ITV16#4 5338 14 25 5/8 1.1 1.5
    ITV20#4 5339 14 25 5/8 1.1 1.5
    ITV22#4 5340 14 25 5/8 0.8 -0.5
    ITV24#4 5341 14 25 5/8 0.8 -0.5
    ITV27#4 5342 14 25 5/8 0.8 -0.5
    IU20#4 5360 10 19 5/8 0.9 -0.5
    IU22#4 5361 10 19 5/8 0.9 -0.5
    IU24#4 5362 10 19 5/8 0.9 -0.5
    IU24A#4 5365 10 19 5/8 0.9 -0.5
    IU27#4 5363 10 19 5/8 0.9 -0.5
    IU27A#4 5366 10 19 5/8 0.9 -0.5
    IU31#4 5364 10 19 5/8 0.9 -0.5
    IU31A#4 5367 10 19 5/8 0.9 -0.5
    IUF22#4 5383 10 12.7 5/8 0.8 0.6
    IUF24#4 5384 10 12.7 5/8 0.8 0.6
    IUF27A#4 5385 10 12.7 5/8 0.8 0.6
    IUF31A#4 5386 10 12.7 5/8 0.8 0.6
    IUH24#4 5368 10 19 5/8 0.9 0.6
    IUH27#4 5369 10 19 5/8 0.9 0.6
    IW16#4 5305 14 19 13/16 1.1 1.5
    IW20#4 5306 14 19 13/16 1.1 1.5
    IW22#4 5307 14 19 13/16 0.8 1.5
    IW24#4 5316 14 19 13/16 0.7 -0.5
    IW27#4 5317 14 19 13/16 0.7 -0.5
    IW29#4 5318 14 19 13/16 0.7 -0.5
    IW31#4 5319 14 19 13/16 0.7 -0.5
    IW34#4 5320 14 19 13/16 0.7 -0.5
    IWM24#4 5391 14 19 13/16 0.8 -1.5
    IWM27#4 5392 14 19 13/16 0.8 -1.5
    IWM31#4 5393 14 19 13/16 0.8 -1.5
    IWF16#4 5359 14 12.7 13/16 0.8 1.5
    IWF20#4 5378 14 12.7 13/16 0.8 1.5
    IWF22#4 5379 14 12.7 13/16 0.8 -0.5
    IWF24#4 5380 14 12.7 13/16 0.8 -0.5
    IWF27#4 5381 14 12.7 13/16 0.8 -0.5
    IX22#4 5371 12 19 18mm 0.8 0.6
    IX22B#4 5375 12 19 18mm 0.9 1.5
    IX24#4 5372 12 19 18mm 0.8 0.6
    IX24B#4 5376 12 19 18mm 0.9 1.5
    IX27#4 5373 12 19 18mm 0.8 0.6
    IX27B#4 5377 12 19 18mm 0.9 1.5
    IXU22#4 5308 12 19 5/8 0.9 1.3
    IXU24#4 5309 12 19 5/8 0.9 1.3
    IXU27#4 5337 12 19 5/8 0.9 1.3